Related Manuals for Ferroli RENDIMAX N EL
Summary of Contents for Ferroli RENDIMAX N EL
- Page 1 RENDIMAX N EL gas-fi red cast iron boiler for central heating with elec tron ic ignition and fl ame control OPERATING, IN STAL LA TION AND MAINTENANCE INSTRUCTIONS...
- Page 3 Rendimax N EL Warning • Read the warnings given in this manual thor- • To guarantee efficient operation, the appliance ough ly. They provide important information for must be serviced once a year by an authorised safe installation, use and maintenance service centre.
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Page 4: Table Of Contents
Rendimax N EL INDEX OPERATING INSTRUCTIONS 1. Description of the boiler........................5 2. Main components ..........................6 3. Ignition and shut-down......................... 7 4. Checks and maintenance........................8 INSTALLATION AND MAINTENANCE INSTRUCTIONS 5. Description of the boiler........................9 6. Main components ..........................10 7. -
Page 5: Operating Instructions
They are fitted with electronic ignition devices, automatic operation control (electronic flame control unit) and flue gas sensors for verifying the correct discharge of the combustion gases. The “Rendimax N EL PV” models are also pre-fitted with a variable-speed pump, expansion vessel and safety valve. -
Page 6: Main Components
Rendimax N EL 2. MAIN COMPONENTS Front view of the boilers with control panel cover open Mod. 16-23 PV Mod. 30-36 11 10 10 13 Fig. 1 1 Boiler thermostat 10 Boiler switch 2 Thermal pressure gauge 11 Reset button for electronic flame control unit... -
Page 7: Ignition And Shut-Down
Rendimax N EL 3. IGNITION AND SHUT-DOWN 3.01 Ignition Place the boiler thermostat in the “minimum temperature” position and power the appliance using the boiler switch. To ignite the burner assembly, proceed as follows: • open the gas cock (fitted by the installer);... -
Page 8: Checks And Maintenance
Rendimax N EL 4. CHECKS AND MAINTENANCE Attention Current technical standards envisage periodic maintenance of the appliance, as well as analysis of the composi- tion of the flue gas, to check correct combustion in the burner assembly. As a result, it is suggested that the user stipulate a programmed maintenance contract with a specialised company to periodically carry out the operations listed below. -
Page 9: Installation And Maintenance Instructions
They are fitted with electronic ignition devices, automatic operation control (electronic flame control unit) and flue gas sensors for verifying the correct discharge of the combustion gases. The “Rendimax N EL PV” models are also pre-fitted with a variable-speed pump, expansion vessel and safety valve. -
Page 10: Main Components
Rendimax N EL 6. MAIN COMPONENTS 6.01 main components Front view of the boilers Rear view with control panel cover open Mod. 16-23 PV Mod. 30-36 Mod. 16-23-30 PV 11 10 10 13 fig. 2 1 Boiler thermostat 2 Thermal pressure gauge... -
Page 11: Technical Specifications
Rendimax N EL 7. TECHNICAL SPECIFICATIONS 7.01 Table of technical specifi cations, dimensions and connections (base version) Heat output Heat input (NET) Number MODEL Nominal Adjustable up to: Nominal Min. sections kcal/h kcal/h kcal/h kcal/h 16,2 14.000 11,0 9.500 18,0 15.500... - Page 12 Rendimax N EL 7.02 Table of technical specifi cations, dimensions and connections (pv version) Heat output Heat input (NET) Number MODEL Nominal Adjustable up to: Nominal Min. sections kcal/h kcal/h kcal/h kcal/h 16,2 14.000 11,0 9.500 18,0 15.500 12,7 11.000...
- Page 13 Rendimax N EL 7.03 output variability characteristics The heat rate of the boiler furnace and, as a consequence, the heat output delivered to the central heating water, can be adjusted by simply adjusting the main burner assembly via the gas valve. The diagrams in figs. 4a and 4b indicate the variation in heat output delivered to the water in relation to the adjustment of the operating pressure of the burner assembly.
- Page 14 Rendimax N EL 7.04 characteristics of the pump built into the boiler (models 16 -23 - 30 pv) The discharge head and the flow-rate can be adjusted on the pump using the speed selector switch on the pump itself. Flow-rate Q (m 1, 2, 3 = Positions of the switch on the pump fig.
- Page 15 Rendimax N EL 7.06 pressure drop as a function of heating system water fl ow-rate .07 .08 .09 .1 .7 .8 .9 1 Pressure drop ∆p (m) fig. 6 7.07 Residual discharge head available to the heating system (models 16-23-30 PV) Flow-rate Q (m3/h) fig.
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Page 16: Installation And Safety Devices
Rendimax N EL 8. INSTALLATION AND SAFETY DEVICES • The boiler must only be installed by specialist companies according to the instructions, requirements and laws in force • This boiler must only be used for the application it has been specifically designed for. - Page 17 Rendimax N EL 8.06 Filling the system The installer must ensure that the system is provided with a manual or automatic filling system. The filling pressure when the heating system is cold must be between 0.5 and 1 bar. If, during operation, due to the evaporation of the gases dissolved in the water, the heating system pressure falls below the minimum value described above, it should be returned to the initial value.
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Page 18: Electrical Connections
Rendimax N EL 9. ELECTRICAL CONNECTIONS 9.01 electrical connection The boiler must be connected to a single-phase, 230 volt - 50 hz (phase/neutral) power supply, with 3 a max fu- ses, and a bipolar switch with minimum contact opening of at least 3 mm fitted between boiler and the source of power. - Page 19 Rendimax N EL Operating principle wiring diagram fig. 9 24 Ignition electrode 83 Electronic flame control unit 32 Heating system pump (models 16-23-30 pv) 92 Flue gas thermostat with manual reset 44 Gas valve 98 Boiler switch 49 Safety thermostat...
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Page 20: Set-Up
Rendimax N EL 9.02 opening the control panel To access the electrical components inside the control panel, follow the sequence in fig. 10. 1 Boiler cover 2 Protective cover fastening screw 3 Wiring protective cover 4 Fastening plate and screw 5 Control panel fig. -
Page 21: Settings
Rendimax N EL Note if after having correctly performed the ignition operation, the burners do not light and the reset button light on the electronic control unit is on, indicating that the control unit is blocked, wait around 10 seconds and then press the reset button. - Page 22 Rendimax N EL 11.03 adjusting the heating system power This procedure must be performed with the boiler in operation. Connect a pressure gauge to the pressure test point 2 (fig. 11) located downstream from the gas valve, and turn the knob on the boiler thermostat to the maximum value.
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Page 23: Gas Conversion
Rendimax N EL 12. GAS CONVERSION The following adjustment and conversion operations must be carried out exclusively by qualified personnel, such as those from our sales network or customer service department. 12.01 to change from natural gas (g20) to lpg (g31) •... -
Page 24: Checks And Maintenance
Rendimax N EL 13. CHECKS AND MAINTENANCE Attention The boiler’s electrical devices work at 230v ~ 50hz. Before carrying out any work, make sure the electrical power is removed. 13.01 checking the system boiler (to be performed once a year The system checks are generally performed at the end of the winter season. - Page 25 Rendimax N EL 13.03 disassembling and cleaning the burner assembly (to be performed once a year) To remove the burner assembly, proceed as follows: • Remove the electrical power and close the gas upstream from the boiler. • Remove the electronic flame control unit from the gas valve (fig. 14) •...
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Page 26: Troubleshooting
Rendimax N EL 13.04 electrode assemblies 1 Ionisation electrode 2 Ignition electrode fig. 16 14. TROUBLESHOOTING Fault Cause and corrective action After a number of attempts at ignition, the electronic control unit shuts the boiler down Check that the supply of gas to the boiler is correct and that the air has been eliminated from the pipes. - Page 27 Rendimax N EL The burner assembly burns poorly: Flames too high, too low or too yellow Dirty gas valve filter. Check the pressure of the gas supply. Dirty gas nozzles. Check that the boiler is not dirty. Check that the ventilation in the room where the appliance is installed is sufficient for correct combustion.
- Page 28 FERROLI S.p.A. Via Ritonda 78/a 37047 San Bonifacio - Verona - ITALY www.ferroli.it...
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